I have home fiber. Again, I have 20 ms to Google. 40 ms is already in the range that playing traditional instruments in sync is basically impossible. At a more typical 100 ms between nodes, that's a full 16th note of lag at common tempos.

I know people that have also done it with techno, but they consider the lag as part of their unique sound. It's not something you can do with music in a general purpose sense.